DelMonte, Guidubaldo, Mechanicorvm Liber

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99
Et ſi funis in F duobus aliis adhuc circumuol­
uatur orbiculis, quorum centra ſint HK, qui de­
inde religetur in L; erit proportio potentiæ in G
ad pondus A ſeſquialtera.
Si enim in MNOP quatuor eſſent poten
tiæ pondus ſuſtinentes, vnaquæq; ſubquadru
pla eſſet ponderis A: ſed cùm potentia in k
ſit dupla potentiæ in N; erit potentia in k
ponderis A ſubdupla.
& quoniam potentia
in D duabus in MO potentiis eſt æqualis; erit
quoq; potentia in D ponderis A ſubdupla.

cùm autem adhuc potentia in C potentiæ in P
ſit dupla, erit ſimiliter potentia in C ponderis A
ſubdupla.
tres igitur potentiæ in CD k tribus
medietatibus ponderis A ſunt æquales.
quo­
niam autem potentia in G potentiis in CDK
eſt æqualis, erit potentia in G tribus medie­
tatibus ponderis A æqualis.
Proportio igi­
tur potentiæ ad pondus ſeſquialtera eſt.
Ex 7 huius15 Huius.
Si verò in G ſit potentia mouens, erit ſpa
tium ponderis ſpatii potentiæ ſeſquialterum. 194[Figure 194]
Et ſi funis in L adhuc circa duos alios or
biculos reuoluatur, ſimiliter oſtendetur pro­
portionem potentiæ ad pondus ſeſquitertiam
eſſe.
& ſic in infinitum omnes proportiones
potentiæ ad pondus ſuperparticulares inue­
niemus.
oſtendemuſq; potentiam pondus
ſuſtinentem ad pondus ita eſſe, vt ſpatium
ponderis moti ad ſpatìum potentiæ pondus
mouentis.

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